Automatic stop mechanism for talking-machines



E. T. CONDON, In.

AUTOMATIC STOP MECHANISM FOR TALKING MACHINES.

' 7 APPLICATION FILED AUG.II I916- 1 34,350. Patented Mar. 23, 1920.

Zak/am] $752100].-

EDWARD T. GONDON, JR., 0]? NEW YORK, N. Y.

AUTOMATIC STOP MECHANISM FOR TALTEKZING-MAGHINES Specification of Letters Patent.

Patented Main 2/; M120.

Application filed August 11, 1916. Serial .No. 114,342.

To all whom it may concern:

lle it known that 1, Beware '1. Concert, J12, a citizen oi? the United States, and a resident of New York, in the county of New York and State of New Yorlnhave invented certain new and useful Improvements in Automatic Stop Mechanism for Talkingllilachines, of which the following is a specilication.

The invention relates to improvements in talking;- machines, more particularly to mechanism for automatically effecting the stopping oi? the record table at the completion oil a selection; and it has for its object to provide a device of this character which shall be simple in construction, inexpensive to manufacture, positive and direct in its action and readily attachable to existing; machines.

The nature of the invention will be best understood when described in connection with the accompanying drawings, in whicha Figure l is a plan of a talking machine with stop mechanism attached.

Figs. 2 to 4L are detail views, in plan, of the stop mechanism, illustrating the same in various stages of its action.

Fig. 5 is a detail front elevation of the stop mechanism.

Fig. 6 is a detail end view, partly in section, illustrating the stem mounting of the stop mechanism.

Similar characters of reference designate corresponding parts throughout the several MEWS Referring to the drawings, 10 designates a suitable box or cabinet containing the usual. mechanism torcffecting rotation of a record table 11 designed to support and rotate a dish record 12 The tone arm 13, sound box l4; and stylus 15 may be of the usual con struction and form. no part of the present invention, which relates more particularly to mechanism designed to automatically engage the circumference of the table 11 to bring the same to a full stop at the completion oi a selection. To this end, there is provided a suitable supporting means such as a plate or bracket designed to be secured to the top oi the casing 10 in the proper position for the purpose intended. The said bracket is provided with two upwardlyextending ears forming an inner bearing :21 and an outer bearing 22, the lat ter being provided with an outwardly-extending flange portion 23. In the two hearing members 21 and 22 is mounted, to be radially reciproc-able with respect to the table ii, a brake member or red 2i provided at its inner end with a suitable friction piece or shoe 25 which is adapted to make contact with the circiunl'ference or rim of the said table 1.1 to bring; the latter to a full stop. .lihe said rod 2t is urged inwardly toward the trim. o'lf' table 11 by means oi a spring 26 coiled abou; said rod and located between the bearing and a shoulder 27 of rid rod. its innermost position and position for eil'ectinp; tliestopping of the tables rotation, being); indicated. in Figs. i and 5. At its outer end, there is mounted in the red, as will hereiii'lftcr be more fully set forth, stem 28 extending upwardly through the flan and when the stop is in looking position through a socket 529 thereof, whose vertical axis lies in a plane with the longitudinal axis or the said rod. The stem, when in soclret 29, maintains a substantially upright position and is provided at its outer end with an arm 32 turned first substantially perpendicular to the longitudinal axis otrod 24L, then parallel thereto with. an upward inclination and in a direction toward the table '11, and thereupon with a further and upward bend perpendicular to the longitudinal axis oi: said rod toward the tone arm 13, which it is designed to engage.

An outlet slot is provided from the soclret terminating; at the tone arm side in a nose 31, formed at the outer end there'- oi and of suilicient bearing surface or shoulder to accommodate the angular motion of stem 28, as will be hereinafter set forth, said nose h avinn; its releasing edge substantially in the plane oi the slot and rod axes, or preferably s. htly displaced therefrom in the direction oi' the tone. arm The stem 28 is mounted in the outer end of rod 24 in.

such a manner as to maintain a friction fit therein, permitting the said stem, under certain conditions, to move relatively with respect to the said rod, turning therein, as

well as to effect angular movement of the rod itself. This may be accomplished, for example, by providing stem 28 with an up per shoulder 33 against which is forced a block 34-, The portion of the stem below same placed through a vertical. hole 35 of the rod 934i, a sprinp; washer 36 being interposed as well as a locking washer 37, the latter bearing against a lower shoulder 38 of table 11.

the projecting end of the stem which is set to the required extent to afford the desired degree of friction, and is shown more particularly in Fig.

To operate the stop, it is necessary first to move inwardly the tone arm to a position corresponding to the last groove, or end of the selection, oi? the record to be engaged by the stylus 15, the stem 28 remaining in the socket 29 during this stage of the setting. Duringthis stage. the arm is rotated until its free end contacts with the tone arm 13. The tone arm is then returned to the proper starting position, as shown in Fig. 1, and the stem 28 grasped, near its connection with the rod. to avoid relative movement between said stem and its rod 24;. and drawn out of the notch or socket through the slot 30 and locked against the shoulder 31. the arm 32 i'uoving toward the tone arm 13, a dis tance determined by the design of the shoulder. W'ithdre .ving the stem from its socket. releases the brake member from the table 11 which begins its rotation to ellect the reproduction of the record. Eventually, and before the completion of the record, engagement of the tone arm 13 with arm 32 is effected, the stem 28 then being gradually angularly rotated back to its original set position into the plane of the axes of rod 24 and socket 29. Thereupon, the said stem 98 is moved past the nose or shoulder 31 and suddenly released to shoot the rod 24. inwardly under the influence of its coiled spring 26, returning through slot 30 to its looking or braking position in the socket 29 and eflecting the stopping of rotation of Should it be desired to operate the machine without the automatic stop, the stem 28 may be held. in inoperative position, for example. by forcing it into an auxiliary socket 40.1ocated upon the opposite side of the said slot 30.

I claim:

1. Stop mechanism for talking machines, comprising: a reciprocably and rotatably mounted brake member, a setting member trictionally pivoted to the brake member; to effect an angular movement thereof and to allow of an oscillation thereon about the pivoted axis for purpose of adjustment rel atively to the tone arm of the talking ma chine with which, said member is adapted to engage; and means to hold said brake member in retracted position.

2. Stop mechanism for talking machines comprising: a reciprocably and rotatably mounted rod provided with a brake piece at one end; a spring coiled about said rod to urge the same toward the turn-table of said machine; a stem frictionally pivoted to the other end of said rod to effect an angle lar movement thereof and to allow of an oscillation thereon about the pivoted axis for purpose of adjustment relatively to the tone arm of the talking machine with which said stem is adapted to engage; and means to hold said rod in retracted position.

8. Stop mechanism for talking machines.

comprising: a reciprocably and rotatably mounted rod provided with a brake piece at One end; a spring coiled about said rod to urge the same toward the turn-table of said machine, a stem frictionally pivoted to the other end of said rod to effect an angular movement thereof and to allow of an oscillation thereon about the pivoted axis for purpose of adjustment relatively to the tone arm of the talking machine with which said stem is adapted to engage; and means to hold said rod in retracted position. including a plate provided with a socket to receive the stem. with an exit slot therefrom and a shoulder or nose at the outer end of said slot.

Stop mechai'iism for talking machines. comprising: a reciprocably and rotatably aounted rod provided with a brake piece at one end, and at the other end with a hole eXten ding entirely therethrough; a stem fitting therein. the rod being upset at the projecting end. and provided with a shoulder at the entrance portion, suitable washers included between said upset end and the rod and the shoulder and rod to frictionally pivot the stem to the rod and to effect an angular movement thereof and to allow of an oscillation thereon about the pivoted axis for purpose of adjustment relatively to the tone arm of the talking machine with which said stem is adapted to engage; and means to hold said rod in retracted position.

5. Stop mechanism for talking machines. comprising: a reciprocably mounted brake member; a setting member connected therewith to ollect angular movement of same and adapted for engagement with the tone arm of the talking machine. said two members being relatively movable with respect to each other; means to temporarily hold said brake member in retracted and set position: and means to permanently retain said brake member in inoperative and non-set position.

6. Stop mechanism for talking machines, comprising: a reciprocably mounted brake member; a setting member connected therewith to effect angular movement of same and adapted for engagement with the tone arm of the talking machine. said two members being relatively movable with respect to each other; and a plate provided with a socket to receive the setting member in set position, with an erit slot therefrom and a shoulder or nose at the outer end of said slot. and with a further socket to retain the settino member in inoperative position.

7. Stop mechanism for talking machines. comprising: reciprocablv and rotatably mounted brake member; a setting member pivoted thereto to effect an angular movel. (l O .ment of same and adapted for engagement with the tone arm of the talking machine, said two members being relatively movable with respect to each other; and means provided with a socket to receive the setting member in set position, with an exit slot therefrom and a shoulder or nose at the outer end of said slot, and with a further socket located beyond the first-named socket to retain the setting member in inoperative position.

8. Stop mechanism for talking machines, ci'nnprising: a bracket member adapted to be secured to the talking'machine and hav- :ing two upturned ears forming bearings; a spllllg urged rod mounted therein and provided at its inner end with a brake piece; a stem ili'rictionally secured to the other end oil? the rock perpendicularly thereto and having an extending arm adapted to engage the tone arm of the talking machine, and one oi? said cars having a plate extending at right angles thcreto provided *With a socket to receive the said stem, with an exit slot therefrom and a shoulder or nose at the outer end oi" said slot.

9. Stop mechanism for talking machines, comprising: a bracket member adapted to be secured to the talking machine and having two upturned ears forming bearings; a rod mounted to reciprocate and rotate in said bearings, provided at its inner end with a brake piece; a spring coiled about said rod between a shoulder thereof and an ear oi? said bracket member to urge the rod in the direction of the turn-table of said talking machine; a stem passing entirely through a hole at the other end of said rod, upset at the protruding end and provided. with a shoulder at the entrance portion, and suitable washers included between said upset end and the rod and the shoulder and the rod to frictionally pivot the stem. to the rod to effect an angular movement of the latter and allow of an oscillation thereon about the pivoted axis for purpose of adjust ment relatively to the tone arm of the talking machine; and a plate extending from one of said ears, provided with a socket to receive the said stem, with an exit slot there from and with a shoulder or nose at the outer end of said slot.

Signed at New York, in the county of New York and State of New York this 10th day of August, A. D. 1916.

EDWARD T. ()ONDON, JR. 

